Submission #897897

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
897897	2024-01-04 00:24:02	joelgun14	One-Way Streets (CEOI17_oneway)	C++17	100 / 100	81 ms	25036 KiB

oneway

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// header file
#include <bits/stdc++.h>
// pragma
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
// macros
#define endl "\n"
#define ll long long
#define mp make_pair
#define ins insert
#define lb lower_bound
#define pb push_back
#define ub upper_bound
#define lll __int128
#define fi first
#define se second
using namespace std;
const int lim = 1e5 + 5;
// dsu struct
struct disjoint_set {
    int h[lim], sz[lim];
    disjoint_set() {
        memset(h, -1, sizeof(h));
        fill(sz, sz + lim, 1);
    }
    int fh(int nd) {
        return h[nd] == -1 ? nd : h[nd] = fh(h[nd]);
    }
    bool merge(int x, int y) {
        x = fh(x), y = fh(y);
 
 
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• Subtask 1: 30 / 30
• Subtask 2: 30 / 30
• Subtask 3: 40 / 40